1216034312 has 16 divisors (see below), whose sum is σ = 2284995840. Its totient is φ = 606702096.

The previous prime is 1216034297. The next prime is 1216034317. The reversal of 1216034312 is 2134306121.

It is a super-2 number, since 2×1216034312² = 2957478895922626688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1216034317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160448 + ... + 167855.

It is an arithmetic number, because the mean of its divisors is an integer number (142812240).

Almost surely, 2^1216034312 is an apocalyptic number.

It is an amenable number.

1216034312 is a deficient number, since it is larger than the sum of its proper divisors (1068961528).

1216034312 is a wasteful number, since it uses less digits than its factorization.

1216034312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328772 (or 328768 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1216034312 is about 34871.6835268961. The cubic root of 1216034312 is about 1067.3706986704.

Subtracting 1216034312 from its reverse (2134306121), we obtain a square (918271809 = 30303²).

The spelling of 1216034312 in words is "one billion, two hundred sixteen million, thirty-four thousand, three hundred twelve".